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Molecular Hydrogen Controls the Temperatures of Flares on TRAPPIST-1

  • Authors: A. I. Shapiro, N. Kostogryz, S. Seager, V. Witzke, J. de Wit, V. Vasilyev, Astrid M. Veronig, Robert Cameron, Hardi Peter, S. K. Solanki

A. I. Shapiro et al 2026 The Astrophysical Journal Letters 998 .

  • Provider: AAS Journals

Caption: Figure 5.

The H2 thermostat disappears for hotter stars. The heat capacity (per particle) as a function of stellar effective temperature. The key takeaway from the figure is that the H2 thermostat weakens with increasing stellar effective temperature and essentially vanishes in early M and late K dwarfs.

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